What's the slope of the line containing the pair of points (9,-7) and (9,-10)

How many 2/5s are in 1 and 1/2 plz someone me right now

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g

Find the root(s) of f (x) = (x- 6)2(x + 2)2.